This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X155-20S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The MBLJ replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 135 to 155 mm. This model is discontinued — the direct replacement is the MBLJ25X155-20S.
- BoreØ25 mm
- Stroke155 mm
- Adjust window135–155 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X155-20S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S
The AirTAC MALJ25X155-20S is a discontinued double-acting, double-rod mini cylinder with a rear adjustable-stroke stopper. It provides a usable travel window of 135-155 mm by trimming up to 20 mm at the rear screw. The direct replacement is the MBLJ25X155-20S, matching the bore, stroke, force, G1/8 port, and mounting.
This -S variant includes a magnet for position sensing. The legacy MALJ uses CS1-M or DS1-M switches and has threaded covers, whereas the current MBLJ features a riveted rolling-packed body and uses CMSG, DMSG, or EMSG sensors. The fixed rubber bumper absorbs end impact, but the rear adjuster is strictly a travel stop, not a lock. It cannot hold a load without live air pressure.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X155-20S |
| Bore size | Ø25 mm |
| Stroke | 155 mm |
| Adjustable window | 135 – 155 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.1 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 300 mm |
The rear adjuster is a travel stop, not a lock — it sets the end position but does not hold the load without live air. No back-cover code and no SDB on adjustable-stroke. The MBLJ25X155-20S carries the same ratings.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 206 N | 206 N |
| 0.7 MPa | 289 N | — |
| Max (@1.0 MPa) | 42 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ25X155-20S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×155 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 135–155 mm window. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MBLJ uses CMSG/DMSG/EMSG). |
Replacement: MALJ → MBLJ. No back-cover (CA/U/CM) and no SDB. Mounting: FA / LB.
Where the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S Is Used
Textile Loom Tensioner
Fine-tunes the fabric guide arm position on a textile loom, adjusting the rear stopper by up to 20 mm to compensate for varying material thicknesses.
Carton Flap Folder
Adjusts the folding stroke on a packaging line carton sealer, ensuring the 206 N pull force precisely meets varying box heights without needing new hardware.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S with MBLJ25X155-20S
To replace this MALJ25X155-20S, order the MBLJ25X155-20S. Confirm the 25 mm bore, 155 mm stroke, 20 mm adjust code, PT G1/8 port, and M10x1.25 rod thread. Mounting is Basic, FA, or LB only; there is no back-cover or SDB option. Because the 155 mm stroke is relatively long, minimize side-load to prevent rod bending. Note the sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG.
Upgrade checklist
- ✓ Order the MBLJ25X155-20S (same bore/stroke/adjust)
- ✓ Same 135–155 mm adjustable window
- ✓ Adjuster is a stop, not a lock
- ✓ No back cover / SDB — plan an FA/LB mount
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.1 – 1.0 MPa operating pressure.
- check The rear adjuster sets the end position — it is not a load lock.
- check No back-cover / SDB on adjustable-stroke — use FA / LB.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the MBLJ25X155-20S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-20S FAQ
Yes, the MALJ25X155-20S is discontinued. The direct replacement is the MBLJ25X155-20S, which matches the 25 mm bore, 155 mm stroke, 20 mm adjust code, G1/8 port, and mounting. You will only need to update your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -20 adjust code lets you trim the rear travel stop by up to 20 mm, creating a usable stroke window of 135-155 mm. The adjuster is a stop, not a lock, and cannot hold a load without air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X155-20S replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
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